Combination-lock



v Patented Nov. l, I898. H. G. JOHNSON.

COMBINATION LOCK.

(Application filed May 10, 1897.

2 Sheets-Shut 1.

(N0 Model.)

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No. 6l3,280. Patented Nov. I, I898.

H. G. JOHNSON. COMBINATION LOCK.

(Application filed May 10. 1897.) Modem 2 Sheets-Sheet 2.

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UNITED STATES PATENT OFFICE,

HANS G. JOHNSON, OF WAUKON, IOWA.

COMBINATION-LOCK.

SPECIFICATION forming part of Letters E'atent N 0. 613,280, dated November 1, 1898.

Application filed May 10, 1897. Serial No. 635,789. (No model.)

To all whom it may concern:

Be it known that I, HANS G. JOHNSON, of Waukon, in the county of Alamakee and State of Iowa, have invented certain new and usef ul Improvements in Oombination Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to combination-locks.

My object is to provide acombination-lock which will have improved indicating devices,

so that it may be readily operated in the dark by one familiar with the combination.

A further object is to provide a combination-lock of extremely simple and cheap construction which will be extremely difficult or impossible to open by one not familiar with the combination.

Having the foregoing objects in view, the invention consists of a combination-lock of improved construction, as will appearvmore fully in the following-description and claims.

In the accompanying drawings, Figure 1 is an elevation showing the casing removed; Fig. 2, a sectional elevation; Fig. 3, a top edge view with the tumblers in position for the opening of the lock, and Fig. 4 a detail view of the tumblers separated but in relative arrangement.

The numeral 1 designates the casin g, which is formed in two parts, and the base-plate of this casing has a slot or opening 2 and two bolt-holes 3. A hub 4 is formed integral with the said plate, and in this hub is a lockinggroove 5 and a smaller groove 6, located diametrically opposite.

The numeral 7 designates a sleeve which passes through the door 8, and this is provided with a handle 9 on end and has a slotted finger 10 on its other end, said finger working in the opening of the base-plate.

The numeral 11 designates the bolt, which is provided with an elliptical slot 12, in which the hub is received, and this bolt works between the guides of the base-plate. It is provided with a locking-lug 13, adapted for reception in the locking-groove of the hub, and has a pin 14, which is received in the slotted finger. Said bolt also has a shifting-post 15, which works in a slot in the casing. It will be seen that by turning the handle the finger will be moved and the bolt shifted.

The shifting-post can also be employed for moving the bolt.

The numeral 16 designates a washer which almost completely encircles the hub and lies against the bolt, said Washer being provided with a pin or key 17, which is received in the smaller slot of the hub and'prevents rotation of said washer.

The numeral 18 designates a tumbler which rests against the aforesaid washer and encircles the hub, said tumbler being provided with projecting ears 19, separated by a space 20, in which the locking-lug of the bolt is adapted to slide when the proper combination has been effected. This tumbler has two pins 21 and 22, which project from its periphery. Holes 22 are provided in the periphery, so that by inserting the pins therein changes in the combination can be had, for by changing the relative position of the pins the combination will also be changed. Another washer 23, of similar construction to that previously described, lies against the tumbler just mentioned.

The numeral 24 designates a tumbler of the same construction as that just described and which lies against the washer 23. Said tumbler, however, has pins 25 and 26, which are separated a sufficient distance so that when the openings in the tumbler are properly alined the pins of the first-named tumbler will lie between those just described, and another washer 27 rests against the tumbler 24-.

The numeral 28 designates the master-tumbler, which is provided with teeth 29 on its periphery and with notches 30 in its inner edge, the latter notches being employed to receive the locking-lug of the bolt should the latter be pushed back and forth while the tumblers are being turned, and hence locking the bolt and thus foiling the attempt to open the lock. Said master-tumbler has pegs or pins 31 projecting from its face near its pe riphery, and one of these pins constitutes a master-pin 32, which projects across the pe= riphery of the other tumblers and is adapted to engage with the pins thereof.

The numeral 33 designates a click-spring which is secured in a post 34 and has its free end sliding on the teeth of the master-tumbler.

The numeral 35 designates a spindle Which has a thumb-knob 30' on one end and a removable thumbknob 37 on its other end. This spindle extends through the sleeve 7. A combination-finger 38 is secured to the thumbknob 36 and is provided with a slot 30, adapted to receive any one of the pins projecting from the master-tumbler. A disk 40 is secured to the end of the hub and abuts against the master-tumbler.

The operation is'as follows: The combination-finger being of a spring metal can be sprung up over any pin or placed between adjacent pins, as desired, so that the combination may be changed whenever necessary. \Vhen the bolt is extended, the locking-lug lies in the locking-groove of the head. The master-tumbler can then be turned either way by means of the thumb-knobs. It will be seen that the master-pin will under proper conditions engage with the pins on the other tumblers and actuate the same. When the proper combination has been eifected, the openings between the ears of the tumblers are brought into alinement and either the shifting-post or the handle can be moved, whereupon the locking lug of the bolt will pass out of the groove in the head and between the ears of the tumblers, so that the device is unlocked. The shifting-post also serves as an abutment for the spring combination -finger to determine the distance it shall be turned in one direction.

Instead of employing the graduated dials commonly found in combination-locks it will be observed that the spring, by riding on the teeth of the master-tumbler, gives forth pulsation or vibrations which can be readily felt by the hand of the operator, so that the lock can be easily operated in the dark, thereby making it especially adaptable for use in connection with doors, although it is obvious that the lock can be employedin any connection.

There are many slight changes which could be resorted to in carrying out the invention without detracting from any of the advantages thereof, and hence I do not desire to limit myself to the precise construction herein described, but consider that I am entitled to 5o I claim as new, and desire to secure by Letters Patent, is-

1. In a combination-lock, the combination with a hub having a groove, of atu mbler loose on said hub which is provided with an openin g which leads outwardly, a master-tumbler having notches on its inner edge adjacent the hub and provided with an opening similar to the aforesaid opening, a bolt having a locking-lug which is adapted to move in the openings of the tumblers or to lie in the groove of the hub or engage with the notches of the master-tumbler, and means for turning said master-tumbler.

2. In a combination-lock, the combination with a sliding bolt, tumblers having pins, a master-tumbler having means to prevent the sliding of the bolt while the tumblers are being turned, said means consisting of the notches 30 on the inner edge of the mastertumbler, all substantially as described and for the purpose set forth.

3. In a combination-lock, the combination with a sliding bolt having a locking-lug, of a hub having a locking-groove, tumblers loose on said hub, which are provided with outwardly-extending openings and with pins, a master-tumbler loose on the hub and provided with an opening and innernotches adjacent the hub, pins projecting from said master-tumbler, a master-pin connected to the tumbler and adapted to engage with the pins of the other tumblers, indicating mechanism actuated by the movement of the master-tumbler, a combination arm adapted to engage with the pins of the master-tumbler, and means for actuating said master-tumbler.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

HANS G. JOHNSON.

Vitnesses:

J. K. IIAINES, GEO. J. I'IELMING. 

